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ПІДТВЕРДЖУВАЛЬНЕ ПОВІДОМЛЕННЯ

Державне підприємство

«Український науково-дослідний і навчальний центр
проблем стандартизації, сертифікації та якості»
(ДП «УкрНДНЦ»)

Наказ від 22.08.2016 № 243

EN 13201-4:2015

Road lighting - Part 4: Methods of measuring lighting performance

прийнято як національний стандарт
методом «підтвердження» за позначенням

ДСТУ EN 13201-4: 2016
(EN 13201-4:2015, IDT)

Вуличне освітлення. Частина 4. Методи вимірювання світлових характеристик.

Копію цього стандарту можна отримати
у Національному фонді нормативних документів

З наданням чинності від 2016-09-01

EN13201-4

December 2015

EUROPEAN STANDARD

NORME EUROPEENNE

EUROPAISCHE NORM

S

ICS 93.080.40

upersedes EN 13201-4:2003

English Version

Road lighting - Part 4: Methods of measuring lighting
performance

Eclairage public - Partie 4 : Methodes de mesure des StraRenbeleuchtung - Teil 4: Methoden zur Messung

performances photometriques der Giitemerkmale von StralSenbeleuchtungsanlagen

This European Standard was approved by CEN on 6 June 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions forgiving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATION СОМІТЁ EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG

C

Ref. No.EN 13201-4:2015 E

EN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

©2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members

.Contents Page

Foreword 4

Introduction 6

1. Scope 7

2. Normative references 7

3. Terms and definitions 7

4. Symbols and abbreviations 9

5. Preliminary information of road lighting system measurement 9

   1. Aims of measurements 9

   2. Measurement procedures and selection of photometric instruments 10

   3. Measurement uncertainty evaluation 11

   4. Measured zones 13

   5. Measured parameters 13

   6. General information regarding measurements during the lifetime of the lighting

installation 14

1. 7. Comparison with requirements 14

2. Measurement conditions 15

   1. Ageing of lamps and luminaires before measurements 15

   2. Stabilization after switch-on 15

   3. Climatic conditions 15

   4. Road conditions 16

   5. Extraneous light and obstruction of light 16

3. Photometric measurements 17

   1. Location of grid points 17

   2. Measurement of luminance 17

   3. Measurement of illuminance 18

   4. Measurement of Edge Illuminance Ratio (Леї) 20

   5. Measurement of the threshold increment (/ті) 21

4. Measurement of non-photometric parameters 22

   1. General 22

   2. Supply voltage 22

   3. Temperature and humidity 22

   4. Geometric data 22

   5. Instruments for non-photometric measurements 22

5. Test report 23

1. (informative) Evaluation of tolerances in road lighting installation design 24

A.l Tolerance analysis 24

A.2 Parameters to be considered in the tolerance analysis 25

A.3 Mathematical model for tolerance evaluations 26

A.4 Modelling the tolerance analysis 26

2. (informative) Important particular parameters 29

3. (normative) Conventions for symbols of photometric quality parameters 32

4. (normative) Guidelines for measurement systems for adaptive road lighting 33

5. (informative) Measurements for investigation of discrepancies between photometric measures and design expectation 35

6. (informative) Measurement uncertainty evaluation) 36

F.l Luminance measurements 36

F.2 Illuminance measurements 39

3. (informative) Practical information 43

G.l General 43

G.2 Measurement precautions 43

G.3 Measurement organization 43

3. (informative) Example of report 44

H.l Premise 44

H.2 General test information 44

H.3 Geometrical data 44

H.4 Road surface data 44

H.5 Lamp and luminaire data 45

H.6 Electricity supply 45

H.7 Environmental conditions 46

H.8 Condition of installation 46

H.9 Measuring devices data 46

H.10 Photometric measuring devices characteristics 47

H.ll Measurement grid 47

H.12 Light monitoring record ..47

H.13 Specific information for dynamic measurements 48

Bibliography 49European foreword

This document (EN 13201-4:2015) has been prepared by Technical Committee CEN/TC 169 "Light and lighting", the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2016 and conflicting national standards shall be withdrawn at the latest by June 2016.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 13201-4:2003.

The main technical changes in this version are:

• The definition of different aims of measurement with peculiar requirements in order to optimize the instrument characteristics, measurement cost and time;

• A deeper comparison between static and dynamic measurement requirements;

• Addition of specific requirements for ILMD (Image Luminance Measuring Device) when used as luminance meter;

• Evaluation of measurement uncertainty;

• Comparison with requirements or design expectation carried out considering the expanded measurement uncertainty of the measure;

• Addition of guidelines for the measurement of Threshold Increment and of Edge Illuminance Ratio;

• Suggestion for an algorithm for the evaluation of tolerances in road lighting installation design;

• Description of the concept of particular parameters in order to consider measurements carried out in condition different from the normative ones;

• Description of an improved convention for symbols of photometric quality parameters in order to avoid confusion between values of the same parameter but with different meanings;

• Measurement systems for adaptive road lighting are considered;

• Guidelines for the measurement uncertainty evaluation are given.

This document EN 13201-4 has been worked out by the Joint Working Group of CEN/TC 169 "Light and lighting" with CEN/TC 226 "Road Equipment”, the secretariat of which is held by AFNOR.

EN 13201, Road lighting is a series of documents that consists of the following parts:

• Part 1: Guidelines on selection of lighting classes [T echnical Report];

• Part 2: Performance requirements;

• Part3: Calculation of performance;

• Part 4: Methods of measuring lighting performance [present document];

• Part 5: Energy performance indicators.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Introduction

The purpose of Part 4 of this European Standard is to:

1. establish conventions and procedures for the characterization based on measurements of road lighting installations considering the photometric quality parameters, i.e. the set of quantities that characterize a lighting class, specified in Part 2;

2. give advice on the use and selection of luminance meters and illuminance meters for this particular application;

3. specify measurement requirements according to the aims of the measurement and expected accuracy;

4. establish conventions for evaluating the measurement uncertainty of involved parameters;

5. give information on the application of tolerance analysis in the design of the lighting installation.

A non-exhaustive list of possible measurement aims is:

6. verification of compliance with standard requirements;

7. verification of compliance with design expectations;

8. road lighting installation monitoring, e.g. for maintenance purposes;

9. road lighting installation control, e.g. for optimizing energy saving;

10. investigation of discrepancies between real lighting conditions and design expectations.

The conventions for observer position and location of measurement points are those adopted in EN 13201-3. However, relaxation from these is permitted especially where the measurements are used for monitoring the performance of a road lighting installation, to control its performances or other purposes or when different conditions are specified in the road lighting installation design.

Conditions, which can lead to inaccuracies, are identified and precautions are given to minimize and quantify these.

This standard should be used to write measurement procedures for the characterization of road lighting installations.

1. Criteria for deciding when measurements should be done, on the purpose of measurements and on how the measurement results shall be used fall outside the scope of this standard.Scope

This European Standard specifies measurement conditions and procedures for measuring the photometric quality parameters of road lighting installations, i.e. the quantities that quantify their performances in accordance with EN 13201-2 lighting classes.

Parameters used for quantifying the energy performance of road lighting installations are not considered.

A methodology to evaluate the road lighting performances considering tolerances in the design parameters is described in the informative Annex A.

2. Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

EN 12665, Light and lighting — Basic terms and criteria for specifying lighting requirements

EN 13032-1, Light and lighting — Measurement and presentation of photometric data of lamps and luminaires — Part 1: Measurement and file format

EN 13201-2, Road lighting — Part 2: Performance requirements

EN 13201-3:2015, Road lighting — Part3: Calculation of performance

3. Terms and definitions

For the purposes of this document, the terms and definitions given in EN 12665 and the following apply.

automatic measuring system for control purpose

automatic system used to generate a control signal, correlated to one or more measured photometric parameters that can influence the operating conditions of a road lighting installation

Note 1 to entry: Metrological parameters, such as measurement repeatability and stability, generally are the main characteristic of the system.

dynamic measurement system

measurement system that moves along the road surface to carry out the measurement

static measurement system

measurement system that does not move when in service

parameter (normative)

quantity defined in EN 13201-2 following calculation rules of EN 13201-3

Note 1 to entry: The value of the parameter can:

1. give standard requirements;

2. give values effectively required by the road authority (design expectations). These values can differ from values given in EN 13201-2;

3. be evaluated using the appropriate algorithm (based on a physical model of light propagation in the environment) as specified by EN 13201-3;

4. be measured following conditions that fit those specified in EN 13201-3 for the points of the grid and, if necessary, for the position of the observer and verifying if the influence of the metrological characteristics of the measuring instrument is compatible with the physical definition of the parameter.

particular parameter

quantity calculated, measured or evaluated in accordance with given and well-defined conditions, but different to those specified in EN 13201-3

Note 1 to entry: The set of conditions shall be described with the measurement results.

luminance (normative)

L

luminance of an elementary surface centred at a given point when viewed from the standard observation position according to EN 13201-3

Note 1 to entry: The luminance is expressed in candela per square metre.

luminance (particular)

L_P

luminance of a surface centred at a given point when viewed from a specified observation position and/or specified conditions highlighted using the subscript p

Note 1 to entry: The luminance (particular) is expressed in candela per square metre.

extended uniformity

a particular parameter introduced to mathematically analyse the influence of non-homogeneity of the environment or of the road surface

Note 1 to entry: This is particularly useful when dynamic measurement systems are used and the presence of non- homogeneity cannot be evaluated before the measurement.

Note 2 to entry: Extended uniformity is discussed in the informative Annex B.

set measurement

measurement carried out in an installation to determine the values of parameters used by an automatic measuring system for control purpose

3.10

image luminance measuring device

ILMD

digital electronic device, equipped with a lens, an adequate photometric matching filter, a sensor made by a matrix of detector (pixel), and calibrated for measuring the luminance distributions of the framed scene

Note 1 to entry: Every pixel is calibrated to determine the luminance values of the space imaged on its surface by the lens system.

Note 2 to entry: The matrix of pixel is generally realized with CCD (charge coupled device) or CMOS (complementary metal oxide semiconductor) sensors.

Note 3 to entry: In literature different terms may be found to describe 1LMD such as multi-channel luminance meter, luminance mapper, array (or matrix) luminance meter, video photometer, photo luminance meter, CCD luminance meter, luminance camera, multidirectional luminance meter, spatial luminance profile device.

3.11

split detector system

a method of measuring horizontal illuminance using couple/s of detectors, the first detector of every couple measures light from the hemisphere in the forward direction, the second one measures light from the hemisphere in the rearward direction

Note 1 to entry: This method is usually applied in dynamic measurement system where one detector is mounted on the front of the vehicle and the other on the rear of the vehicle.

Note 2 to entry: The point illuminance value is obtained by summing the readings of the two detectors at the same spatial point.

3.12

adaptive lighting

temporal controlled changes in luminance or illuminance in relation to traffic volume, time, weather or other parameters .

4. Symbols and abbreviations

EN 13201-3 lists the normative photometric quality parameters of a road lighting installation.

For particular measurement purposes, in addition of normative parameters, a set of particular parameters is described in the informative Annex B. In accordance with the measurement aims and measurement procedures, the person responsible for the measurement decides if it is necessary to use these parameters.

When necessary, to clearly specify with a symbol the meaning or the measurement conditions linked to a parameter the conventions described in the normative Annex C shall be adopted.

5. Preliminary information of road lighting system measurement

   1. Aims of measurements

At least four different aims require the measurement of the photometric quality parameters of a road lighting system:

Measurements at the final testing phase: measurements carried out during the final testing/commissioning phase of the road lighting installation, to verify the compliance with standard requirements and/or with design expectations. These results can be used for the road lighting installations formal approval.

Measurements during the road lighting lifetime: measurements carried out at pre-determined intervals during the road lighting lifetime, to quantify the degradation of the lighting performance and to define the need for maintenance or to verify the compliance of the road lighting installation with the standard requirements or design expectations, generally based on maintained values.

Measurements for adaptive road lighting: measurements carried out continuously or at pre­determined intervals to control the luminous flux of luminaires in adaptive road lighting, where the installations performance is kept at the given value within a given tolerance.

Measurements for investigation of discrepancies: measurements carried out as and when required to investigate discrepancies between measures and design expectations or environment influence.

For every aim different measurement procedures, requirements and metrological characteristics of instruments shall be considered.

The main part of the standard considers requirements for measurement at the final testing phase and during the road lighting lifetime. Peculiarities or additional requirements for measurements for adaptive road lighting are given in the normative Annex D and for investigation of discrepancies in the informative Annex E.

The set measurement (see 3.9) is considered as a peculiar measurement that shall follow requirements for measurement at the final testing phase.

Except for the set measurement, when measurement results need to be compared they shall be carried out considering the same set of measurement points and, if required, observer position.

Measurements shall be carried out following a detailed operating procedure that shall consider the standard requirements or design expectations, describes the evaluation of measurement uncertainty (see informative guidelines in Annex F), specifies the conditions of its applicability and considers practical aspects (see informative guidelines in Annex G).

The objectives of the measurement shall be written in the test report (see Clause 9 and the informative Annex H).

NOTE An existing installation can have its design documentation missing. In this case measurement can be done according to tender specifications.

Measurements can be done with either static or dynamic measurement systems. For a given measurement aim (see 5.1), the selection of the adopted system shall be done considering the required accuracy of the results and other constrains that can rise from safety reasons, local and temporary conditions and/or tender requirements.

A dynamic measurement system can measure the total length (or surface) of a road lighting installation in a more reasonable time than a static measurement system. This peculiarity can be useful when the homogeneity of performances of the road lighting installation shall be investigated or when an entire road network has to be evaluated at a given instant.